package com.facetime.web.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class SessionServlet
 */
public class SessionServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public SessionServlet() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {

		response.setContentType("text/html");

		String result = null;
		String paramUserName = ""; 
		String direction = ""; 
		
		try {						
			paramUserName = request.getParameter("paramUserName");

			direction = request.getParameter("direction");
			
			if( direction.equals( "READ" )) {
				result = request.getSession().getAttribute("USERNAME").toString(); 
			}
			else if( direction.equals( "WRITE" )) {
				request.getSession().setAttribute("USERNAME", paramUserName);
				result = "SESSION_SUCCESS"; 
			}			
		}
		catch(Exception exp) {			
			result = null;   
		}
		
		PrintWriter out = response.getWriter();				 
				
		out.print(result);
        out.flush();          
        out.close();		
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}
